VPN connexion impossible

Bonjour, j’ai un serveur dédier avec OpenVPN de configurer. Tout fonctionnais bien jusqu’aux jour où il m’est malheureusement impossible de me connecter.
J’obtiens un joli message d’erreur. Voire fichier ci-join.
Donc voici le fichier log.

Mon May 26 22:55:51 2014 OpenVPN 2.3.4 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [PKCS11] [IPv6] built on May 2 2014 Mon May 26 22:55:51 2014 library versions: OpenSSL 1.0.1g 7 Apr 2014, LZO 2.05 Enter Management Password: Mon May 26 22:55:51 2014 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25340 Mon May 26 22:55:51 2014 Need hold release from management interface, waiting... Mon May 26 22:55:51 2014 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25340 Mon May 26 22:55:52 2014 MANAGEMENT: CMD 'state on' Mon May 26 22:55:52 2014 MANAGEMENT: CMD 'log all on' Mon May 26 22:55:52 2014 MANAGEMENT: CMD 'hold off' Mon May 26 22:55:52 2014 MANAGEMENT: CMD 'hold release' Mon May 26 22:55:52 2014 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info. Mon May 26 22:55:55 2014 MANAGEMENT: CMD 'password [...]' Mon May 26 22:55:55 2014 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this Mon May 26 22:55:55 2014 SIGUSR1[soft,private-key-password-failure] received, process restarting Mon May 26 22:55:55 2014 MANAGEMENT: >STATE:1401137755,RECONNECTING,private-key-password-failure,, Mon May 26 22:55:55 2014 Restart pause, 5 second(s) Mon May 26 22:56:00 2014 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info. Mon May 26 22:56:03 2014 MANAGEMENT: CMD 'password [...]' Mon May 26 22:56:03 2014 Control Channel Authentication: using 'ta.key' as a OpenVPN static key file Mon May 26 22:56:03 2014 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Mon May 26 22:56:03 2014 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Mon May 26 22:56:03 2014 Socket Buffers: R=[65536->65536] S=[65536->65536] Mon May 26 22:56:03 2014 Attempting to establish TCP connection with [AF_INET]185.13.39.75:443 Mon May 26 22:56:03 2014 MANAGEMENT: >STATE:1401137763,TCP_CONNECT,,,

J’avoue ne pas comprendre pourquoi il m’est impossible de me connecter à mon VPN en sachant que aucune modification à été faite sur sa configuration et que cela est arrivé du jour au lendemain.

Avez-vous une idée ? Merci

PS : Pour la configuration de mon serveur je me suis servi de ce tuto pazpop.fr/installer-un-serveur-v … ux-debian/